Leading Chinese electric vehicle (EV) manufacturer BYD has unveiled a new-generation battery featuring charging speeds that the company says can rival a refill at a petrol station.BYD’s Blade Battery 2.0, launched on Thursday, can be charged from 10 per cent to 70 per cent in five minutes, and to 97 per cent in nine minutes, which the company said was the world’s fastest charging speed for a mass-manufactured unit.Even in extreme weather, with temperatures as low as minus 30 degrees Celsius...